106249491 has 12 divisors (see below), whose sum is σ = 157215240. Its totient is φ = 69105120.

The previous prime is 106249487. The next prime is 106249511. The reversal of 106249491 is 194942601.

It is a happy number.

It is not a de Polignac number, because 106249491 - 2² = 106249487 is a prime.

It is a super-3 number, since 3×106249491³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (106249411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143601 + ... + 144338.

It is an arithmetic number, because the mean of its divisors is an integer number (13101270).

Almost surely, 2^106249491 is an apocalyptic number.

106249491 is a deficient number, since it is larger than the sum of its proper divisors (50965749).

106249491 is a wasteful number, since it uses less digits than its factorization.

106249491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287986 (or 287983 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 106249491 is about 10307.7393738880. The cubic root of 106249491 is about 473.6333622631.

The spelling of 106249491 in words is "one hundred six million, two hundred forty-nine thousand, four hundred ninety-one".